1) Hedonism – the pursuit of pleasure , sensual self-indulgence

 His lifestyle of hedonism left him with little regard for the future.

 2) Harangue – a lengthy and aggressive  speech 

 Synonym – Tirade

 He launched into an harangue about the failing of modern society.

 3) Guile – the ability to be cleaver but using dishonest way

 Synonym – deceit

 He use guile and tricky to win the competition.

 4) Fawn – to display exaggerated flattery or affection

 Synonym – Grovel

 The assistant would always fawn over the boss.

 5) Extant – still in existence

 The ancient manuscripts were one of the few extant of that era.

 6) Extinct – no longer existing

 Tiger are nearly extinct in the wild

 7) Expatiate – to speak or wright at lengthy

 The professor like to expatiate on his favourite topics during his lecture.

 8) Exonerate – to clear someone from blame or charge

 Synonym – exculpate

 The newly discovered evidence was enough to exonerate him from charges.

 9) Exigent – pressing , demanding 

 The exigent circumstance requires immediate action

 10) Germane – relevant to subject under consideration

 Synonym – pertinent 

 This is nor germane to our theme